. >> reporter: yeah, that's the city north of cairo. the political wing of the muslim brotherhood, the freedom and justice party, they claim that masked men stormed their offices and destroyed it, torched it, that happened to another one of their offices in another city outside of cairo, just a sign of this conflict escalating. earlier tonight, outside of the presidential palace, an intense stretch that turned into some ugly violence, that's where you had supporters of president morsi, opponents of president morsi, gathered in front of the palace. initially during the day, there were pockets of clashes. what you had around 7:00, 8:00 p.m. was this remarkable staredown. the main road that goes through the palace is divided by old railroad tracks. on one side of the track, you had supporters of president morsi. on the other side of the tracks, you had opponents, exchanging insults and chants. you knew the tension was escalating and you knew that all someone had to do was throw a piece of debris, a rock or something and that's exactly what